About Atherix marginata (Fabricius, 1781)
Atherix marginata (Fabricius, 1781) has a quite slender body, rounded, widely separated eyes, and three-segmented antennae. The wing costae extend all the way around the entire wings, and its abdomen bears several alternating dark and light stripes. The legs are entirely black, a trait that gives the species its common name. This species is distributed across most of Europe, specifically recorded in Albania, Austria, Belgium, Bosnia and Herzegovina, the British Islands, Bulgaria, Croatia, Czech Republic, Denmark, France, Germany, Hungary, Ireland, Italy, Poland, Portugal, Romania, Slovakia, Spain, Switzerland, and The Netherlands. These ibis flies typically live alongside shallow rivers and streams, especially in hilly regions, where their predatory larvae develop.
